Notes: hexter is a software synthesizer that models the sound generation of a Yamaha DX7 synthesizer. It can easily load most DX7 patch bank files, accept patch editing commands via MIDI sys-ex messages, and recreate the sound of the DX7 with greater accuracy than any previous open-source emulation (that the author is aware of...) hexter operates as a plugin for the DSSI Soft Synth Interface.